1.FENDER SELECTION-Choosing the correct bolt-on fender is based on your wheel size and your tire width. This information can be found on the sidewall of your bicycle tire. Please be careful to choose a fender that is compatible with the size of your wheel and tire. If you have questions, please for help selecting the perfect fender. 2.COMPATIBILITY:A. Frame mounting eyelets are required to mount bolt-on fenders to the bicycle. If your frame does not have mounting eyelets, frame/fork mounting clamps can be purchased separately to create a substitution. B. Fender names include the profile width in mm. Profile width must fit through seat stays & fork legs. C. Rear sliding bridge clip is flip style & can be bolted to under side or front side of seat stay bridge. Seat stay bridge MUST have a hole to mount the sliding bridge clip 3.FENDER FEATURES-Fender profile lengths are: front fender=650mm/rear=1115mm. Fender coverage can be extended by purchasing spoilers/mudflaps. Features ASR Safety Release System which allows the front stays to uncouple should debris get caught in the spokes. Rear fenders feature a cutout on the front facing portion to allow for easier mounting & more adjustability near the bottom bracket. Stays for black fenders are black powder coated stainless. 4.INSTALLATION-Bolt-on full fenders require mechanical skill & will take about 2 hours to install. Installation will require tools: measuring tape, hacksaw, file, 7mm & 8mm wrench, & 4mm allen wrench. Sets include: front & rear fender, stainless stays/struts, mounting hardware, sliding bridge clip, & instructions. If mounting the fenders on a bike with disc brakes, shims are included and will allow mounting the stays around the disc brake caliper. Contact for installation assistance.